113587979561 has 16 divisors (see below), whose sum is σ = 136800154368. Its totient is φ = 92205960000.

The previous prime is 113587979539. The next prime is 113587979579. The reversal of 113587979561 is 165979785311.

It is not a de Polignac number, because 113587979561 - 2²² = 113583785257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113587979494 and 113587979503.

It is not an unprimeable number, because it can be changed into a prime (113587979591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3476390 + ... + 3508911.

It is an arithmetic number, because the mean of its divisors is an integer number (8550009648).

Almost surely, 2^113587979561 is an apocalyptic number.

It is an amenable number.

113587979561 is a deficient number, since it is larger than the sum of its proper divisors (23212174807).

113587979561 is a wasteful number, since it uses less digits than its factorization.

113587979561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985432.

The product of its digits is 14288400, while the sum is 62.

The spelling of 113587979561 in words is "one hundred thirteen billion, five hundred eighty-seven million, nine hundred seventy-nine thousand, five hundred sixty-one".